Siphon-overflow for wool-washing machines.



P. G. SARGENT.

SIPHON OVERFLOW FOR wooL WASHING MACHINES.

APPLICATION FILED AUG.8, 1912.

Patented Feb. 18, 1913.

mall:

UNITED STATES PATENT OFFICE.

FREDERICK G. SARGENT, OF WESTFORD, MASSACHUSETTS,.ASSIGNOR T0 C. G.SARGENTS SONS CORPORATION, OF GRANITEVILLE, MASSACHUSETTS, A COR-PORATION OF MASSACHUSETTS.

SIPHON-OVERFLOW FOR WOOL-WASHING MACHINES.

Specification of Letters Patent.

Application filed August 8, 1912. Serial No. 713,949.

Patented Feb. 18,1913.

To all whom it may concern Be it known that I, FREDERICK G. San- GENT, acitizen of the United States, residing at lVestford, in the county ofMiddleseX and State of Massachusetts, have in vented a new and usefulSiphon-Overflo-w for VVool-VVashing Machines, of which the following isa. specification.

The principal objects of this invention are to provide a practicalsiphon overflow for machines which are frequently supplied with water,as for example, a wool washing machine; to so arrange it as not tointerfere with the screen or false bottom with which said machines areprovidedyand to provide a construction which will take up very littleroom and will work automatically, quickly and effectively in practice.

Further objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying drawings in which,

Figure l is a side elevation of a portion of a wool washing machineshowing a preferred embodiment of the invention applied thereto in sideelevation and partially in section, and Fig. 2 is a sectional view ofthe same on the line 2-2 of Fig. 1.

The invention is shown as applied to a wool washing bowl 10 having ascreen or false bottom 11 therein. This screen or false bottom extendsfrom side to side of the bowl and affords no convenient place throughwhich a siphon can be passed. At the same time it is desirable to havethe liquor drained off from a point below the screen to prevent the scumfrom passing through the siphon and choking it up and therefore so thatthe level of the liquor will be kept constant.

In the embodiment of the invention shown in the drawings, a passage 12is provided in the side of the bowl below the screen and this is coveredon the outside by a plate 13 having a horizontal projection 14 in whichis a chamber 15 communicating with the passage 12. This passagepreferably extends throughout the length of the chamber to permit freeentrance of liquor.

The siphon itself is of a simple form having an upright pipe 16communicating with one end of the chamber 15 and provided with a returnbend 17 at the top communicating with a draft pipe 18 which runs ofi theliquor at a rate varying in accordance with the length of the draftpipe. The automatic arrangement for controlling the siphon to keep thelevel of the liquor at a constant point in the bowl, even under greatlyvarying conditions, is shown in the form of an air pipe 20 entering intothe top of the return bend 17. This passes over and has its outer end21. lower than the end 22 which is in the return bend. This end 21extends into an upright pipe 23 extending up from the other end of thechamber 15 to a point above the level of the liquor in the tank. Thispipe 23 is in direct communication with the liquor in the tank at thebottom and is open to the atmospheric pressure at the top. Therefore thelevel of liquor therein is always the same as that in the bowl. Undernormal conditions this seals the end of the pipe 21 and consequentlywhenever the liquor rises so as to overflow materially in the draft pipe18, no air coming into the return bend except through the pipe 20, itwill be obvious that the reduction in pressure in the draft pipe isprovided and eventually liquor will be drawn over through the pipe 20into the siphon and the entire return bend will be filled. Then themembers 16, 17 and 18 act as a true siphon and they continue to do sountil the level of the liquor in the bowl, and consequently in the pipe23, descends below the bottom of the pipe 21. This admits air into thesiphon and breaks the siphonic action. Consequently this overflow isstopped whenever the level of the liquor is reduced below a certainminimum. This has a material advantage over a weir overflow because inthis class of machines, water is run into the bowl frequently and with aweir the water flow from the bowl becomes faster or slower, according tothe amount flowing in, and the normal level is not restored as quickly.The siphon, when once started, continues to flow at its full capacityuntil the normal level is restored, but with a weir the flow woulddiminish as the normal level was approached. The siphon, therefore, morequickly restores the normal level. The siphon is also located at theside of the bowl where it does not interfere with the false bottoms andtakes up very little space. It will be understood that the bottom of thechamber in the return bend and the bottom of the pipe 21 may besubstantially of the same level.

Although I have illustrated and described a specific embodiment of theinvention, 1 am aware of the fact that it can be carried out in otherforms without departing from the scope of the invention as expressed inthe claims. Therefore I do not wish to be limited to all the details ofconstruction herein shown and described, but

What I do claim is 1. In a wool washing bowl, the combination of anexternal chamber communicating with the side of the bowl, a siphonconnected with said chamber, a regulating pipe extending into the siphonand a tube extending upwardly from said chamber outside the bowl andopen to the air at the top, the end of said regulating tube extendinginto the last named tube.

2. The combination with a wool washing bowl, of a horizontal chamber onthe outside of said bowl and communicating with the interior thereof, asiphon extending upwardly from one end of the chamber and having areturn bend at the top, a pipe extending upwardly from the other end ofthe chamber outside the bowl and open to the air and in freecommunication with the liquor in the bowl, and a regulating pipe extending down into the return bend at one end and into the upwardlyextending pipe at the other, the end of said regulating tube whichextends into the pipe being substantially on the level of the bottom ofthe space in the return bend.

In testimony whereof I have hereunto set my hand, in the presence of twosubscribing witnesses.

FREDERICK Gr. SARGENT.

lVitnesses:

FRED W. SWAIN, FRANK COLLINS.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

